science
Grade-3
Easy

Question

A child’s palms were freezing due to cold. How can he warm his palms?

  1. He should touch the ice
  2. He should rub his palms together
  3. He should flap his palms
  4. None of the above

The correct answer is: He should rub his palms together


    The rubbing together of two objects causes friction and friction generates heat. Hence, in order for a child to warm his palms, he should rub his palms together.